LD1085 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

LD1085

3A Low drop positive voltage regulator adjustable and fixed

STMicroelectronics 

Electrical characteristics

LD1085 series

Table 5.

Symbol

Electrical characteristics of LD1085#25

(VI=5.5V, CI = CO =10μF, TA = -40 to 125°C, unless otherwise specified).

Parameter

Test

Min. Typ. Max. Unit

VO

ΔVO

ΔVO

Vd

Iq

Isc

SVR

eN

S

Output voltage (1)

IO = 0 mA, TJ = 25°C

IO = 0 to 3A, VI = 4.1 to 30V

Line regulation

IO = 0 mA, VI = 4.1 to 18V, TJ = 25°C

IO = 0 mA, VI = 4.1 to 18V

Load regulation

IO = 0 to 3A, TJ = 25°C

IO = 0 to 3A

Dropout voltage

IO = 3A

Quiescent current

VI ≤30V

Short circuit current

VI - VO = 5V

VI - VO = 25V

Thermal regulation

TA = 25°C, 30ms pulse

Supply voltage rejection

f = 120 Hz, CO = 25µF, IO = 3A

VI = 7.5 ± 3V

RMS Output noise voltage (% of

VO)

TA = 25°C, f =10Hz to 10KHz

Temperature stability

2.475

2.45

3.2

0.2

60

S Long term stability

TA = 125°C, 1000Hrs

1. See short-circuit current curve for available output current at fixed dropout.

2.5 2.525

2.5 2.55

0.2 4

0.4 4

2

10

4

20

1.3 1.5

5

10

4.5

0.5

0.008 0.04

72

0.003

0.5

0.5

V

V

mV

mV

mV

mV

V

mA

A

A

%/W

dB

%

%

%

8/27

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